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comparison: media/libvpx/vp8/encoder/arm/armv6/vp8_subtract_armv6.asm
media/libvpx/vp8/encoder/arm/armv6/vp8_subtract_armv6.asm
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- TOR_BUG_9701
- changeset 10
- ac0c01689b40
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| -1:000000000000 | 0:e0a3ebca8b33 |
|---|---|
| 1 ; | |
| 2 ; Copyright (c) 2011 The WebM project authors. All Rights Reserved. | |
| 3 ; | |
| 4 ; Use of this source code is governed by a BSD-style license | |
| 5 ; that can be found in the LICENSE file in the root of the source | |
| 6 ; tree. An additional intellectual property rights grant can be found | |
| 7 ; in the file PATENTS. All contributing project authors may | |
| 8 ; be found in the AUTHORS file in the root of the source tree. | |
| 9 ; | |
| 10 | |
| 11 | |
| 12 EXPORT |vp8_subtract_mby_armv6| | |
| 13 EXPORT |vp8_subtract_mbuv_armv6| | |
| 14 EXPORT |vp8_subtract_b_armv6| | |
| 15 | |
| 16 INCLUDE vp8_asm_enc_offsets.asm | |
| 17 | |
| 18 ARM | |
| 19 REQUIRE8 | |
| 20 PRESERVE8 | |
| 21 | |
| 22 AREA ||.text||, CODE, READONLY, ALIGN=2 | |
| 23 | |
| 24 ; r0 BLOCK *be | |
| 25 ; r1 BLOCKD *bd | |
| 26 ; r2 int pitch | |
| 27 |vp8_subtract_b_armv6| PROC | |
| 28 | |
| 29 stmfd sp!, {r4-r9} | |
| 30 | |
| 31 ldr r4, [r0, #vp8_block_base_src] | |
| 32 ldr r5, [r0, #vp8_block_src] | |
| 33 ldr r6, [r0, #vp8_block_src_diff] | |
| 34 | |
| 35 ldr r3, [r4] | |
| 36 ldr r7, [r0, #vp8_block_src_stride] | |
| 37 add r3, r3, r5 ; src = *base_src + src | |
| 38 ldr r8, [r1, #vp8_blockd_predictor] | |
| 39 | |
| 40 mov r9, #4 ; loop count | |
| 41 | |
| 42 loop_block | |
| 43 | |
| 44 ldr r0, [r3], r7 ; src | |
| 45 ldr r1, [r8], r2 ; pred | |
| 46 | |
| 47 uxtb16 r4, r0 ; [s2 | s0] | |
| 48 uxtb16 r5, r1 ; [p2 | p0] | |
| 49 uxtb16 r0, r0, ror #8 ; [s3 | s1] | |
| 50 uxtb16 r1, r1, ror #8 ; [p3 | p1] | |
| 51 | |
| 52 usub16 r4, r4, r5 ; [d2 | d0] | |
| 53 usub16 r5, r0, r1 ; [d3 | d1] | |
| 54 | |
| 55 subs r9, r9, #1 ; decrement loop counter | |
| 56 | |
| 57 pkhbt r0, r4, r5, lsl #16 ; [d1 | d0] | |
| 58 pkhtb r1, r5, r4, asr #16 ; [d3 | d2] | |
| 59 | |
| 60 str r0, [r6, #0] ; diff | |
| 61 str r1, [r6, #4] ; diff | |
| 62 | |
| 63 add r6, r6, r2, lsl #1 ; update diff pointer | |
| 64 bne loop_block | |
| 65 | |
| 66 ldmfd sp!, {r4-r9} | |
| 67 mov pc, lr | |
| 68 | |
| 69 ENDP | |
| 70 | |
| 71 | |
| 72 ; r0 short *diff | |
| 73 ; r1 unsigned char *usrc | |
| 74 ; r2 unsigned char *vsrc | |
| 75 ; r3 int src_stride | |
| 76 ; sp unsigned char *upred | |
| 77 ; sp unsigned char *vpred | |
| 78 ; sp int pred_stride | |
| 79 |vp8_subtract_mbuv_armv6| PROC | |
| 80 | |
| 81 stmfd sp!, {r4-r11} | |
| 82 | |
| 83 add r0, r0, #512 ; set *diff point to Cb | |
| 84 mov r4, #8 ; loop count | |
| 85 ldr r5, [sp, #32] ; upred | |
| 86 ldr r12, [sp, #40] ; pred_stride | |
| 87 | |
| 88 ; Subtract U block | |
| 89 loop_u | |
| 90 ldr r6, [r1] ; usrc (A) | |
| 91 ldr r7, [r5] ; upred (A) | |
| 92 | |
| 93 uxtb16 r8, r6 ; [s2 | s0] (A) | |
| 94 uxtb16 r9, r7 ; [p2 | p0] (A) | |
| 95 uxtb16 r10, r6, ror #8 ; [s3 | s1] (A) | |
| 96 uxtb16 r11, r7, ror #8 ; [p3 | p1] (A) | |
| 97 | |
| 98 usub16 r6, r8, r9 ; [d2 | d0] (A) | |
| 99 usub16 r7, r10, r11 ; [d3 | d1] (A) | |
| 100 | |
| 101 ldr r10, [r1, #4] ; usrc (B) | |
| 102 ldr r11, [r5, #4] ; upred (B) | |
| 103 | |
| 104 pkhbt r8, r6, r7, lsl #16 ; [d1 | d0] (A) | |
| 105 pkhtb r9, r7, r6, asr #16 ; [d3 | d2] (A) | |
| 106 | |
| 107 str r8, [r0], #4 ; diff (A) | |
| 108 uxtb16 r8, r10 ; [s2 | s0] (B) | |
| 109 str r9, [r0], #4 ; diff (A) | |
| 110 | |
| 111 uxtb16 r9, r11 ; [p2 | p0] (B) | |
| 112 uxtb16 r10, r10, ror #8 ; [s3 | s1] (B) | |
| 113 uxtb16 r11, r11, ror #8 ; [p3 | p1] (B) | |
| 114 | |
| 115 usub16 r6, r8, r9 ; [d2 | d0] (B) | |
| 116 usub16 r7, r10, r11 ; [d3 | d1] (B) | |
| 117 | |
| 118 add r1, r1, r3 ; update usrc pointer | |
| 119 add r5, r5, r12 ; update upred pointer | |
| 120 | |
| 121 pkhbt r8, r6, r7, lsl #16 ; [d1 | d0] (B) | |
| 122 pkhtb r9, r7, r6, asr #16 ; [d3 | d2] (B) | |
| 123 | |
| 124 str r8, [r0], #4 ; diff (B) | |
| 125 subs r4, r4, #1 ; update loop counter | |
| 126 str r9, [r0], #4 ; diff (B) | |
| 127 | |
| 128 bne loop_u | |
| 129 | |
| 130 ldr r5, [sp, #36] ; vpred | |
| 131 mov r4, #8 ; loop count | |
| 132 | |
| 133 ; Subtract V block | |
| 134 loop_v | |
| 135 ldr r6, [r2] ; vsrc (A) | |
| 136 ldr r7, [r5] ; vpred (A) | |
| 137 | |
| 138 uxtb16 r8, r6 ; [s2 | s0] (A) | |
| 139 uxtb16 r9, r7 ; [p2 | p0] (A) | |
| 140 uxtb16 r10, r6, ror #8 ; [s3 | s1] (A) | |
| 141 uxtb16 r11, r7, ror #8 ; [p3 | p1] (A) | |
| 142 | |
| 143 usub16 r6, r8, r9 ; [d2 | d0] (A) | |
| 144 usub16 r7, r10, r11 ; [d3 | d1] (A) | |
| 145 | |
| 146 ldr r10, [r2, #4] ; vsrc (B) | |
| 147 ldr r11, [r5, #4] ; vpred (B) | |
| 148 | |
| 149 pkhbt r8, r6, r7, lsl #16 ; [d1 | d0] (A) | |
| 150 pkhtb r9, r7, r6, asr #16 ; [d3 | d2] (A) | |
| 151 | |
| 152 str r8, [r0], #4 ; diff (A) | |
| 153 uxtb16 r8, r10 ; [s2 | s0] (B) | |
| 154 str r9, [r0], #4 ; diff (A) | |
| 155 | |
| 156 uxtb16 r9, r11 ; [p2 | p0] (B) | |
| 157 uxtb16 r10, r10, ror #8 ; [s3 | s1] (B) | |
| 158 uxtb16 r11, r11, ror #8 ; [p3 | p1] (B) | |
| 159 | |
| 160 usub16 r6, r8, r9 ; [d2 | d0] (B) | |
| 161 usub16 r7, r10, r11 ; [d3 | d1] (B) | |
| 162 | |
| 163 add r2, r2, r3 ; update vsrc pointer | |
| 164 add r5, r5, r12 ; update vpred pointer | |
| 165 | |
| 166 pkhbt r8, r6, r7, lsl #16 ; [d1 | d0] (B) | |
| 167 pkhtb r9, r7, r6, asr #16 ; [d3 | d2] (B) | |
| 168 | |
| 169 str r8, [r0], #4 ; diff (B) | |
| 170 subs r4, r4, #1 ; update loop counter | |
| 171 str r9, [r0], #4 ; diff (B) | |
| 172 | |
| 173 bne loop_v | |
| 174 | |
| 175 ldmfd sp!, {r4-r11} | |
| 176 bx lr | |
| 177 | |
| 178 ENDP | |
| 179 | |
| 180 | |
| 181 ; r0 short *diff | |
| 182 ; r1 unsigned char *src | |
| 183 ; r2 int src_stride | |
| 184 ; r3 unsigned char *pred | |
| 185 ; sp int pred_stride | |
| 186 |vp8_subtract_mby_armv6| PROC | |
| 187 | |
| 188 stmfd sp!, {r4-r11} | |
| 189 ldr r12, [sp, #32] ; pred_stride | |
| 190 mov r4, #16 | |
| 191 loop | |
| 192 ldr r6, [r1] ; src (A) | |
| 193 ldr r7, [r3] ; pred (A) | |
| 194 | |
| 195 uxtb16 r8, r6 ; [s2 | s0] (A) | |
| 196 uxtb16 r9, r7 ; [p2 | p0] (A) | |
| 197 uxtb16 r10, r6, ror #8 ; [s3 | s1] (A) | |
| 198 uxtb16 r11, r7, ror #8 ; [p3 | p1] (A) | |
| 199 | |
| 200 usub16 r6, r8, r9 ; [d2 | d0] (A) | |
| 201 usub16 r7, r10, r11 ; [d3 | d1] (A) | |
| 202 | |
| 203 ldr r10, [r1, #4] ; src (B) | |
| 204 ldr r11, [r3, #4] ; pred (B) | |
| 205 | |
| 206 pkhbt r8, r6, r7, lsl #16 ; [d1 | d0] (A) | |
| 207 pkhtb r9, r7, r6, asr #16 ; [d3 | d2] (A) | |
| 208 | |
| 209 str r8, [r0], #4 ; diff (A) | |
| 210 uxtb16 r8, r10 ; [s2 | s0] (B) | |
| 211 str r9, [r0], #4 ; diff (A) | |
| 212 | |
| 213 uxtb16 r9, r11 ; [p2 | p0] (B) | |
| 214 uxtb16 r10, r10, ror #8 ; [s3 | s1] (B) | |
| 215 uxtb16 r11, r11, ror #8 ; [p3 | p1] (B) | |
| 216 | |
| 217 usub16 r6, r8, r9 ; [d2 | d0] (B) | |
| 218 usub16 r7, r10, r11 ; [d3 | d1] (B) | |
| 219 | |
| 220 ldr r10, [r1, #8] ; src (C) | |
| 221 ldr r11, [r3, #8] ; pred (C) | |
| 222 | |
| 223 pkhbt r8, r6, r7, lsl #16 ; [d1 | d0] (B) | |
| 224 pkhtb r9, r7, r6, asr #16 ; [d3 | d2] (B) | |
| 225 | |
| 226 str r8, [r0], #4 ; diff (B) | |
| 227 uxtb16 r8, r10 ; [s2 | s0] (C) | |
| 228 str r9, [r0], #4 ; diff (B) | |
| 229 | |
| 230 uxtb16 r9, r11 ; [p2 | p0] (C) | |
| 231 uxtb16 r10, r10, ror #8 ; [s3 | s1] (C) | |
| 232 uxtb16 r11, r11, ror #8 ; [p3 | p1] (C) | |
| 233 | |
| 234 usub16 r6, r8, r9 ; [d2 | d0] (C) | |
| 235 usub16 r7, r10, r11 ; [d3 | d1] (C) | |
| 236 | |
| 237 ldr r10, [r1, #12] ; src (D) | |
| 238 ldr r11, [r3, #12] ; pred (D) | |
| 239 | |
| 240 pkhbt r8, r6, r7, lsl #16 ; [d1 | d0] (C) | |
| 241 pkhtb r9, r7, r6, asr #16 ; [d3 | d2] (C) | |
| 242 | |
| 243 str r8, [r0], #4 ; diff (C) | |
| 244 uxtb16 r8, r10 ; [s2 | s0] (D) | |
| 245 str r9, [r0], #4 ; diff (C) | |
| 246 | |
| 247 uxtb16 r9, r11 ; [p2 | p0] (D) | |
| 248 uxtb16 r10, r10, ror #8 ; [s3 | s1] (D) | |
| 249 uxtb16 r11, r11, ror #8 ; [p3 | p1] (D) | |
| 250 | |
| 251 usub16 r6, r8, r9 ; [d2 | d0] (D) | |
| 252 usub16 r7, r10, r11 ; [d3 | d1] (D) | |
| 253 | |
| 254 add r1, r1, r2 ; update src pointer | |
| 255 add r3, r3, r12 ; update pred pointer | |
| 256 | |
| 257 pkhbt r8, r6, r7, lsl #16 ; [d1 | d0] (D) | |
| 258 pkhtb r9, r7, r6, asr #16 ; [d3 | d2] (D) | |
| 259 | |
| 260 str r8, [r0], #4 ; diff (D) | |
| 261 subs r4, r4, #1 ; update loop counter | |
| 262 str r9, [r0], #4 ; diff (D) | |
| 263 | |
| 264 bne loop | |
| 265 | |
| 266 ldmfd sp!, {r4-r11} | |
| 267 bx lr | |
| 268 | |
| 269 ENDP | |
| 270 | |
| 271 END | |
| 272 |
